iPass Certifies Sierra Wireless Aircard® 580 For Mobile Data Service

Companies Work Together to Enable Convenient 3G Connectivity Via iPass Corporate Access Service

REDWOOD SHORES, CA, and VANCOUVER, B.C. -August 15, 2005

iPass (NASDAQ: IPAS) and Sierra Wireless (NASDAQ: SWIR - TSX: SW) today announced the certification and availability of the Sierra Wireless AirCard® 580 wireless PC card for use with the iPass Mobile Data Service. The companies also announced that Sierra Wireless has become an iPass AllianceTM Technology Partner. The two companies will continue to work together to provide enterprise customers the latest technology for accessing the iPass 3G/EV-DO network via the iPassConnectTM universal client.

The iPass Mobile Data Service quickly, easily and securely connects users with corporate resources through cellular network technologies. Remote and mobile workers use the iPassConnect universal client to access a wide range of wireless wide area networks that provide high-speed data connections.

For access to its EV-DO service, iPass has certified the Sierra Wireless AirCard 580 wireless wide area PC card. The AirCard 580 offers reliable high-speed connectivity with average user speeds of 500-700 kilobits per second (kbps) and peak data speeds of up to 2.4 Megabits per second (Mbps), one of the fastest wireless data transmission speeds available today. The AirCard 580 PC card was built for mobile users that require fast access to mission-critical enterprise applications such as email sales force automation and customer relationship management tools, as well as streaming audio, video and the Internet. The product enables mobile professionals to extend their corporate experience outside the office with "always on" access in a Type II PC card format, improving field productivity and giving enterprise users a vital competitive advantage while traveling or meeting with customers.

"The ability to connect from nearly anywhere is becoming increasingly important to our enterprise customers," said Jon Russo, vice president of marketing and mobility for iPass. "Near instantaneous access to network data and applications can prove to be a critical competitive advantage, and our Mobile Data Service can give our customers that advantage. iPass Mobile Data Service, accessed with iPassConnect and the Sierra Wireless AirCard 580, is designed as the 'gap-fill' connectivity that permits people do important work as they move between broadband hotspots."

"With the AirCard 580, iPass Mobile Data Service offers customers a superior connection that allows them to work from virtually anywhere," said Dan Schieler, senior vice president of sales for Sierra Wireless. "Information customers need to close a sale, serve their clients, or file required reports is always accessible, giving them the freedom to organize their work and their time more effectively."

In the United States, iPass has integrated nationwide 1xRTT and EV-DO service into its virtual network, which also includes the world's largest Wi-Fi network of over 21,000 hotspots, and dial-up access in 150 countries, all accessible through a single user interface. With iPass used as the sole provider for all remote connectivity, including mobile data services, IT departments can get one bill and gain the advantage of being able to track expenses and control costs more easily.

The AirCard 580 with iPass Mobile Data Service is now available directly from iPass and through its reseller channels. For more information about the iPass Mobile Data Service, please visit:
http://www.ipass.com/services/services_mobiledata.html.

For more information about the AirCard 580, please visit:
www.sierrawireless.com/product/AC580EVDO.aspx.

About iPass Inc.
iPass Inc. (NASDAQ: IPAS) delivers simple and manageable enterprise mobility services, enabling the maximization of the productivity of workers as they move between office, home and remote locations. iPass security services - based on unique Policy Orchestration capabilities - work to close the gaps in protecting computers, network assets, user identities and data whenever users connect over the Internet. iPass connectivity services utilize the iPass global virtual network, a unified network of hundreds of dial-up, wireless and broadband providers in over 150 countries. iPass services are the choice of hundreds of Global 2000 corporations including General Motors, Hershey Foods and Mellon Financial. Founded in 1996, iPass is headquartered in Redwood Shores, Calif., with offices throughout North America, Europe and Asia Pacific. For more information visit www.ipass.com.

About Sierra Wireless
Sierra Wireless is a leader in delivering highly differentiated wireless solutions that enable our customers to improve their productivity and lifestyle. Sierra Wireless develops and markets the AirCard, the industry-leading wireless PC card line for portable computers; embedded modules for OEM wireless applications; and the MP line of rugged vehicle-mounted connectivity solutions. For more information about Sierra Wireless please visit www.sierrawireless.com.

Forward Looking Statements
This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements relate to, among other things, plans and timing for the introduction or enhancement of our services and products, statements about future market conditions, supply conditions, channel and end customer demand conditions, revenues, gross margins, operating expenses, profits, and other expectations, intentions, and plans contained in this press release that are not historical fact. Our expectations regarding future revenues and earnings depend in part upon our ability to successfully develop, manufacture, and supply products that we do not produce today and that meet defined specifications. When used in this press release, the words "plan", "expect", "believe", and similar expressions generally identify forward-looking statements. These statements reflect our current expectations. They are subject to a number of risks and uncertainties, including, but not limited to, changes in technology and changes in the wireless data communications market. In light of the many risks and uncertainties surrounding the wireless data communications market, you should understand that we cannot assure you that the forward-looking statements contained in this press release will be realized.